KLING & FREITAG K&F SONA SUB - Manual (Page 6)

User's manual K&F SONA SUB
KLING & FREITAG GMBH © 2014 Version 2.1 Page 6 of 21
2.3 Required signal processor
The following information does not apply to the option "XO" :
When using the SONA SUB, a signal processor is required such as an electronic crossover or
the K&F Controller CD 44.
The signal processor must provide at least the following settings:
• 1 x high-pass 4th order Butterworth
• 1 x low-pass 3rd order Butterworth
• 1 x bell filter
• 1 x all-pass 1st order (Only if SONA 5 is filtered).
Further information in chapter Configuration and Connecting Diagram on page 13 ff.
2.4 Required mounting material
For wall and ceiling mounting:
• At least 3 screws (not countersunk) with
a thread diameter of 6 mm,
a head diameter of 10 mm minimum/ 13 mm maximum,
and a head height of 6 mm max.
• Rawlplugs or other suitable mounting aids with official technical approval
corresponding to the given requirements.